Natural Selection questions?

Question

1. Who published his own theory of evolution by natural selection about the same time as Charles Darwin?

2. Any inherited characteristic that increases an organisms chance of survival, like webbed feet, sharp claws, or speed is called an ___.

3. A giraffe that stretches its neck longer by reaching for food and then passes this long-necked trait on to offspring is an example of ____ of ____.

4. Another name for divergent evolution is _____.

5. On the Galapagos Islands, Darwin observed that the characteristics of many animals and plants: a) all looked alike. b) varied from island to island. c) were acquired through use.

6. Because of its similarities to artificial selection, Darwin referred to the "survival of the fittest" as: a) use it or lose it. b) natural selection. c) homologous structures. d) struggle for existence.

7. The idea that each living species has descended with changes from other species over time is called: a) descent with modification. b) struggle for existence. c) artificial selection. d) acquired traits.

8. An inherited characteristic that increases an organism ability to survive and reproduce in its specific environment is called: a) homologous structure. b) vestigial organ. c) adaption. d) speciation.

9. A human appendix, whale hipbones, and a skin's legs are examples of: a) homologous structures. b) embryonic mates. c) vestigial organs.

Answer any that you know. I REALLY need help, thanks!

Answer 1

1. Alfred Russell Wallace

2. adaption

3. survival; fittest

4. adaptive radiation

5. a

6. b

7. a

8. c

9. c



I'm not positive on #4, but I'm pretty sure the rest are all right



Hope I helped!

Answer 2

Natural selection gives a being characteristics that better enhance survival. It isn't a question of ethics.Sometimes something that is PERCEIVED as evil can better enhance survival in an individual... For example:Infanticide committed by nonfathers in the animal kingdom can be perceived as evil by us.But for animals it allows the nonparental male to produce more offspring with the females of those babies thus enhancing his fitness.

Answer 3

because of its similarities to artifical selection, darwin, refered to the srivaval of the fittest as

Answer 4

Here's a hint. Open the Biology text book and read it.